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这些字段类型就可以通过数据字典获取label及其选项，无需自己写各种各样乱七八糟的options</p> <h2 id="数据字典的配置"><a href="#数据字典的配置" class="header-anchor">#</a> 数据字典的配置</h2> <p>通常配置在column下,然后被分别赋值到component.dict和form.component.dict</p> <div class="language-javascript extra-class"><pre class="language-javascript"><code><span class="token keyword">export</span> <span class="token keyword">const</span> crudOptions <span class="token operator">=</span> <span class="token punctuation">{</span>
  columns<span class="token punctuation">:</span> <span class="token punctuation">[</span> <span class="token comment">//字段配置</span>
    <span class="token punctuation">{</span>
      dict<span class="token punctuation">:</span><span class="token punctuation">{</span>
        <span class="token comment">// 这里配置远程获取字典数据的请求地址</span>
        url<span class="token punctuation">:</span><span class="token string">'remote/dict/url'</span><span class="token punctuation">,</span> 
        <span class="token comment">// 或者配置一个方法，动态构建url</span>
        <span class="token function-variable function">url</span><span class="token punctuation">:</span> <span class="token punctuation">(</span><span class="token parameter">dict<span class="token punctuation">,</span><span class="token punctuation">{</span>form<span class="token punctuation">,</span>component<span class="token punctuation">}</span></span><span class="token punctuation">)</span><span class="token operator">=&gt;</span><span class="token punctuation">{</span> 
          <span class="token keyword">return</span> <span class="token string">'newUrl'</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span> 
        data<span class="token punctuation">:</span> <span class="token keyword">undefined</span><span class="token punctuation">,</span> <span class="token comment">//[Array]，如果数据无需远程获取，可以直接将字典数组写在这里</span>
        <span class="token function-variable function">getData</span><span class="token punctuation">:</span><span class="token punctuation">(</span><span class="token parameter">url<span class="token punctuation">,</span>dict<span class="token punctuation">,</span><span class="token punctuation">{</span>form<span class="token punctuation">,</span>component<span class="token punctuation">}</span></span><span class="token punctuation">)</span><span class="token operator">=&gt;</span><span class="token punctuation">{</span> <span class="token comment">//配置此参数会覆盖全局的getRemoteDictFunc</span>
          <span class="token keyword">return</span> <span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token parameter">ret</span><span class="token operator">=&gt;</span><span class="token punctuation">{</span><span class="token keyword">return</span> ret<span class="token punctuation">.</span>data<span class="token punctuation">}</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>
        cache<span class="token punctuation">:</span><span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token comment">//默认开启缓存</span>
        value<span class="token punctuation">:</span> <span class="token string">'value'</span><span class="token punctuation">,</span> <span class="token comment">// 数据字典中value字段的属性名</span>
        label<span class="token punctuation">:</span> <span class="token string">'label'</span><span class="token punctuation">,</span> <span class="token comment">// 数据字典中label字段的属性名</span>
        children<span class="token punctuation">:</span> <span class="token string">'children'</span><span class="token punctuation">,</span> <span class="token comment">// 数据字典中children字段的属性名</span>
        isTree<span class="token punctuation">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token comment">// 此数据字典是否是树形的，通常用于级联组件、地区选择组件等处</span>
        <span class="token function-variable function">onReady</span><span class="token punctuation">:</span><span class="token punctuation">(</span><span class="token parameter">data<span class="token punctuation">,</span> dict</span><span class="token punctuation">)</span><span class="token operator">=&gt;</span><span class="token punctuation">{</span>
          <span class="token comment">//远程数据字典加载完成事件，每个引用该字典的组件都会触发一次</span>
        <span class="token punctuation">}</span>   
      <span class="token punctuation">}</span>   
    <span class="token punctuation">}</span>
<span class="token punctuation">]</span><span class="token punctuation">}</span>
</code></pre></div><p>注意：dict会以url作为缓存key，使得该字典只会远程获取一次。</p> <div class="language-js extra-class"><pre class="language-js"><code>dict<span class="token punctuation">:</span><span class="token punctuation">{</span>
    cache<span class="token punctuation">:</span><span class="token boolean">false</span> <span class="token comment">//可以禁用缓存</span>
<span class="token punctuation">}</span>
</code></pre></div><p>注意： <code>url()</code> ,<code>getData()</code> 这两者都会覆盖全局的getRemoteDictFunc<br>
区别是：</p> <ul><li><code>getData()</code> ：如果配置相同的url，即便getData不一样，还是会获取到相同的字典数据，可以通过url单独清理缓存</li> <li><code>url()</code>： 将不会进行缓存</li></ul> <h2 id="外部使用数据字典"><a href="#外部使用数据字典" class="header-anchor">#</a> 外部使用数据字典</h2> <div class="language-javascript extra-class"><pre class="language-javascript"><code><span class="token keyword">import</span> <span class="token punctuation">{</span> d2CrudPlus <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'d2-crud-plus'</span>
<span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
  <span class="token function">data</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> <span class="token punctuation">{</span>
      dict<span class="token punctuation">:</span> <span class="token punctuation">{</span> url<span class="token punctuation">:</span> <span class="token string">'/hotel/roomtype/options'</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
      dictData<span class="token punctuation">:</span><span class="token punctuation">[</span><span class="token punctuation">]</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token function">created</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    d2CrudPlus<span class="token punctuation">.</span>util<span class="token punctuation">.</span>dict<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>dict<span class="token punctuation">,</span>options<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">data</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span>dictData <span class="token operator">=</span> data
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><h2 id="清除字典缓存"><a href="#清除字典缓存" class="header-anchor">#</a> 清除字典缓存</h2> <p>远程字典会以url作为key缓存在内存里面<br>
某些情况下需要清空字典缓存，比如添加修改删除字典项的时候</p> <div class="language-javascript extra-class"><pre class="language-javascript"><code><span class="token keyword">import</span> <span class="token punctuation">{</span> d2CrudPlus <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'d2-crud-plus'</span>
d2CrudPlus<span class="token punctuation">.</span>util<span class="token punctuation">.</span>dict<span class="token punctuation">.</span><span class="token function">clear</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment">//清空所有字典缓存</span>
d2CrudPlus<span class="token punctuation">.</span>util<span class="token punctuation">.</span>dict<span class="token punctuation">.</span><span class="token function">clear</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span> <span class="token comment">//清空单个字典缓存</span>
</code></pre></div><h2 id="onready事件监听"><a href="#onready事件监听" class="header-anchor">#</a> onReady事件监听</h2> <p>当dict获取到远程数据之后，会触发onReady事件</p> <div class="language-js extra-class"><pre class="language-js"><code>dict<span class="token punctuation">:</span><span class="token punctuation">{</span>
  <span class="token function-variable function">onReady</span><span class="token punctuation">:</span> <span class="token punctuation">(</span><span class="token parameter">data<span class="token punctuation">,</span> dict<span class="token punctuation">,</span><span class="token punctuation">{</span>form<span class="token punctuation">,</span>component<span class="token punctuation">}</span></span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
      <span class="token keyword">let</span> value <span class="token operator">=</span> vm<span class="token punctuation">.</span><span class="token function">getEditForm</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>checkbox
      <span class="token keyword">if</span> <span class="token punctuation">(</span>value <span class="token operator">==</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        value <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span>
      <span class="token punctuation">}</span>
      <span class="token function">radioOptionsChanged</span><span class="token punctuation">(</span>vm<span class="token punctuation">,</span> value<span class="token punctuation">)</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/greper/d2-crud-plus/edit/master//docs/guide/dict.md" target="_blank" rel="noopener noreferrer">在 GitHub 上编辑此页</a> <svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg></div> <div class="last-updated"><span class="prefix">上次更新:</span> <span class="time">2020-7-23 5:14:00 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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